
GS-191R
This GS-191R is a fully automated, non-contact 1st surface reflectance tester designed to measure the color and anti-reflective (AR) coating on flat or curved surfaces—specifically optimized for camera lenses. Equipped with an Auto Apex Finder for curved surfaces, as well as Auto-focus and Auto R% measurement, the GS-191R eliminates the need for manual alignment, tuning, or operator judgment. It delivers rapid, repeatable results by leveraging Gamma Scientific’s high-sensitivity spectrometer and a proprietary, efficient reflectance optical design.
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Auto Measurement
Auto Apex Finder, Auto Focus, & Auto R% Measurement
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Short Cycle Time
High-sensitivity spectrometer and a proprietary, efficient reflectance optical design
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Non-Contact Measurements
Measure individual lenses or lenses in assembled camera modules
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Automated Calibration
Automated optical calibration ensures consistent accuracy
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Production-Ready Software
Barcode read/tracking and time stamp, binning functions, & database network link




automation examples:
- Rotary configuration: 100% QC for cover glass AR coating color.
- Semi-automatic configuration: User programmable for different sample size and measurement location.
- Inline configuration: For large cover glass – 9 optical modules – AR Reflectance and Color. Gamma system connected to factory PLC.
- Lens R%: Reflectance percentage tester concept with Pick and Place.